<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./zepto.js"></script>
</head>
<body>
    <button class="btn1">tap</button>

    <script>
        // zepto的使用 和jq一毛一样
        $('.btn1').click(function() {
            console.log(123);
        })
    </script>
</body>
</html>